<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP version 4.0													  |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group								|
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license,	   |
// | that is bundled with this package in the file LICENSE, and is		|
// | available at through the world-wide-web at						   |
// | http://www.php.net/license/2_02.txt.								 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to		  |
// | license@php.net so we can mail you a copy immediately.			   |
// +----------------------------------------------------------------------+
// | Authors: Bertrand Mansion <bmansion@mamasam.com>					 |
// +----------------------------------------------------------------------+
//
// $Id: Email.php,v 1.1 2006/09/24 17:04:56 jamiesensei Exp $

require_once('HTML/QuickForm/Rule.php');

/**
* Email validation rule
* @version	 1.0
*/
class HTML_QuickForm_Rule_Email extends HTML_QuickForm_Rule
{
	var $regex = '/^((\"[^\"\f\n\r\t\v\b]+\")|([\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+(\.[\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+)*))@((\[(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))\])|(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))|((([A-Za-z0-9\-])+\.)+[A-Za-z\-]+))$/';

	/**
	 * Validates an email address
	 *
	 * @param	 string	$email		  Email address
	 * @param	 boolean   $checkDomain	True if dns check should be performed
	 * @access	public
	 * @return	boolean   true if email is valid
	 */
	function validate($email, $checkDomain = false)
	{
		if (preg_match($this->regex, $email)) {
			if ($checkDomain && function_exists('checkdnsrr')) {
				$tokens = explode('@', $email);
				if (checkdnsrr($tokens[1], 'MX') || checkdnsrr($tokens[1], 'A')) {
					return true;
				}
				return false;
			}
			return true;
		}
		return false;
	} // end func validate


	function getValidationScript($options = null)
	{
		return array("  var regex = " . $this->regex . ";\n", "{jsVar} != '' && !regex.test({jsVar})");
	} // end func getValidationScript

} // end class HTML_QuickForm_Rule_Email
?>